I've experienced something similar. So what I do is post in the Deals subforum, and immediately post the same thing, somewhere, in perhaps some related thread, in the proper subforum.
Say there is a deal on a plasma. I submit to Deals, and then I'll post in a "current" thread where the OP might be interested. Yeah, not everyone may catch it in the latter, but if one was seriously hunting, they would probably notice it.